You do need a serial cable, and disconnect your box from the LAN so your Linux box must be doing everything over the serial link.
You may need what's called a "null-modem" which swaps the tx and rx wires over, and also a "gender-bender".
You do need a serial cable, and disconnect your box from the LAN so your Linux box must be doing everything over the serial link.
You may need what's called a "null-modem" which swaps the tx and rx wires over, and also a "gender-bender".